CrucialCT275MX300SSD1
SanDiskSDSSDXPS-240G

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC.

Real World Speed
Performance profile from 20,517 user samples
17,013 User Benchmarks
Best Bench: 80% 206GB free
Worst Bench: 48% 65GB free
Poor: 48% Great: 80%
SPEED RANK: 435th / 927
3,504 User Benchmarks
Best Bench: 108% 222GB free
Worst Bench: 66% 223GB free
Poor: 66% Great: 108%
SPEED RANK: 154th / 927
Effective Speed
Effective SSD Speed
67.9 % 88.4 % Much faster effective speed.
+30%
Read
Avg. Sequential Read Speed
464 MB/s 492 MB/s Slightly faster read speed.
+6%
Write
Avg. Sequential Write Speed
297 MB/s 435 MB/s Much faster write speed.
+46%
4K Read
Avg. 4K Random Read Speed
22.3 MB/s 29 MB/s Much faster random read.
+30%
4K Write
Avg. 4K Random Write Speed
57.4 MB/s 78 MB/s Much faster random write.
+36%
Mixed
Avg. Sequential Mixed IO Speed
307 MB/s 435 MB/s Much faster mixed IO speed.
+42%
4K Mixed
Avg. 4K Random Mixed IO Speed
16.9 MB/s 22 MB/s Much faster random mixed IO.
+30%
Read
Peak Sequential Read Speed
484 MB/s 517 MB/s Slightly faster peak read speed.
+7%
Write
Peak Sequential Write Speed
338 MB/s 498 MB/s Much faster peak write speed.
+47%
4K Read
Peak 4K Random Read Speed
27.4 MB/s 35.6 MB/s Faster peak random read.
+30%
4K Write
Peak 4K Random Write Speed
79.1 MB/s 112 MB/s Much faster peak random write.
+42%
Mixed
Peak Sequential Mixed IO Speed
339 MB/s 488 MB/s Much faster peak mixed IO speed.
+44%
4K Mixed
Peak 4K Random Mixed IO Speed
24.1 MB/s 30 MB/s Faster peak random mixed IO.
+24%
Market Share
Based on 6,815,596 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.52 % Hugely higher market share.
+940%
0.05 %
Value
Value For Money
80.5 % +1% 79.4 %
User Rating
UBM User Rating
67 % +5% 64 %
Price
Price (score)
$83 Cheaper.
+21%
$105
Age
Newest
23 Months Much more recent.
+51%
47 Months
DQ Read
Peak 4K-64Thread Read Speed
230 MB/s 367 MB/s Much faster peak deep queue read.
+60%
DQ Write
Peak 4K-64Thread Write Speed
216 MB/s 324 MB/s Much faster peak deep queue write.
+50%
AS-SSD Total
AS-SSD Total Score
794 Pts 1,184 Pts Much stronger server IO.
+49%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
40.2 MB/s 65.5 MB/s Much faster peak deep queue mixed IO.
+63%
ADQ Read
Avg. 4K-64Thread Read Speed
123 MB/s 181 MB/s Much faster deep queue read.
+47%
ADQ Write
Avg. 4K-64Thread Write Speed
136 MB/s 207 MB/s Much faster deep queue write.
+52%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
25.3 MB/s 43.3 MB/s Much faster deep queue mixed IO.
+71%
Capacity
Capacity
275GB 240GB
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The 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]

MORE DETAILS

The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) May 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

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Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $170Nvidia GTX 1060-6GB $300Samsung 850 Evo 500GB $136
Intel Core i7-7700K $285AMD RX 480 $300Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $961SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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